Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Door schedule

Watercolor and graphite on layered off-white wove paper

Graphite on paper

Black ink and charcoal on beige wove paper

Black ink on white wove paper

Black ink, graphite, and colored chalk on off-white wove paper; verso: black ink

Graphite on paper

Collage, watercolor, and lithograph on paper

Watercolor and gold paint over graphite on illustration board

Graphite on off-white laid paper

Gouache and black ink over graphite on gray-blue wove paper

Graphite on olive-green wove paper

Graphite on off-white wove paper